PHILADELPHIA — Practice had concluded Tuesday, and most of his teammates already had walked off the floor at PCOM. Nonetheless, Spencer Hawes kept his workout going.

Hawes, with the rebounding and passing help of 76ers assistant coach Brian James, attempted more than 40 3-pointers from all spots around the arc, just as many free throws, and a couple dozen turnaround jumpers from inside 10 feet.

The pressure’s on for Hawes and his post-playing brethren, even if they’re not feeling it from their coach.

“That’s what you want. That’s what you play for,” Hawes said. “You’d rather have it that way than the other way around. I think we have to be more consistent. We’ve seen, when we click, what we’re capable of.”

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The Sixers earlier this week discovered they’ll be without Andrew Bynum for at least another five weeks, maybe more. And veteran center Kwame Brown, who could be a go for Wednesday’s home game against winless Detroit, has played one of the Sixers’ seven games with a left calf strain.

So the responsibility to score in the paint, rebound at both ends and defend against other teams’ biggest bodies falls on Hawes, Lavoy Allen and Thad Young — and, to a lesser extent, rookie forward Arnett Moultrie.

Less than 32 percent of the Sixers’ offense (200 of their 631 total points) has come from their post players.

“We don’t have any back-to-basket players, so you can’t try to make somebody who they aren’t,” Sixers coach Doug Collins said, following Tuesday’s hour-long practice. “We have to try to execute.

“Without Andrew and Kwame, we don’t have a big, strong, physical guy. Last night, I played Thad at center for about 20 minutes. We’ve got to get more consistent, better games from Spencer and Lavoy. That’s the truth.”

That being said, Collins hasn’t been disappointed with his team’s play. The Sixers, after having their three-game winning streak halted Monday by Milwaukee, resided in second place in the Atlantic Division. And two of their three losses had come against scorching-hot New York.

Had Collins been told during a six-win preseason that, without Bynum until possibly January, his team would muster four wins in their first seven games, he’d almost certainly say he’d take it.

“When I look at all the things that have happened, and we’re 4-3, to me, I don’t think we’re underachieved,” Collins said. “Am I disappointed in our record? Absolutely not. I think what happens is the expectations people have — are they for this team or what this team might be? What are the expectations? Has this team underachieved?”

Not exactly, though the Sixers could be getting more from Hawes and Allen.

Collins has said he’s unwilling to use Hawes, primarily a starter in his career, outside of his bench capacity. Collins needs Hawes’ passing ability, size and production on the second team, which is significantly smaller with Bynum saddled by injury and Brown unreliable when it comes to minutes.

For the time being, because Collins prefers to pair Young with a fellow big, the Sixers are stuck with Allen in the starting five. The second-year man out of Temple has shown nothing this season, averaging four points and three rebounds in 20 minutes per game.

“Especially with Bynum out, I carry bigger responsibility on the team,” Allen said. “I’m struggling a little bit in the beginning, but my teammates are behind me. They’re going to help me get back into it.”

The NBA unveiled its ballot for the 2013 All-Star Game, to be played Feb. 17 at Houston’s Toyota Center, and four Sixers made the cut: Andrew Bynum, Thad Young, Spencer Hawes and Jrue Holiday. Bynum has yet to play a game and Hawes has yet to start a game. Hey, nobody said the system was perfect.